No matter how saturated a world is with magic, there are going to be a minority of people, somewhere, who do not have any magical gift. Unless they let themselves be babied by everyone around them, they'd come up with ways around not having the ability, then new ways to make that way even easier.

There's also the people who do something differently just because they can. Just because there is "better" way to do something, doesn't mean there isn't someone who has a way they just enjoy more. Look at steampunkers, they go out of their way to remake new technology back into the old ways, some just by aesthetic, some all the way to pure function.